Flood Zones: Lewisville vs Little Elm
How do flood zones rules compare between Lewisville, TX and Little Elm, TX?
Lewisville and Little Elm have similar restriction levels.
Lewisville, TX
Denton County
Lewisville has extensive FEMA floodplains from Lewisville Lake Dam, Timber Creek, and Fox Branch. Floodplain development permits and elevated construction are required.
View full Lewisville rules →Little Elm, TX
Denton County
Extensive FEMA flood zones exist downstream of Lewisville Lake Dam. New construction must be elevated above the Base Flood Elevation under NFIP rules.
View full Little Elm rules →Key Facts Comparison
| Fact | Lewisville | Little Elm |
|---|---|---|
| Flood Sources | Lewisville Lake Dam, Timber Creek, Fox Branch | - |
| Freeboard Requirement | 1 foot above BFE | - |
| Floodway | No fill or construction allowed | Development prohibited without no-rise certification |
| NFIP Participant | Yes, with CRS discount | - |
| Engineering Dept | (972) 219-3590 | - |
| Dam Exposure | - | Downstream of Lewisville Lake Dam (USACE) |
| NFIP | - | Town participates in National Flood Insurance Program |
| Elevation | - | Lowest floor must be at or above BFE |
| FIRM Maps | - | Available through Development Services |
Highlighted rows indicate differences between cities.
Lewisville FAQ
How do I check if my property is in a flood zone?
Contact the Lewisville Engineering Department at (972) 219-3590 or check the FEMA Flood Map Service Center at msc.fema.gov. The city can provide flood zone determinations and base flood elevation data for your property.
Can I build in a floodplain in Lewisville?
Yes, with a floodplain development permit and compliance with elevation requirements. New residential construction must be elevated at least one foot above the base flood elevation. Construction in regulatory floodways is prohibited.
Is flood insurance required in Lewisville?
Flood insurance is required by federally regulated lenders for properties in FEMA Special Flood Hazard Areas. Even outside SFHAs, flood insurance is recommended. Lewisville participates in the CRS program, which may provide premium discounts.
Little Elm FAQ
Is my property in a flood zone in Little Elm?
Little Elm has significant FEMA-mapped flood zones along Lewisville Lake and downstream of the dam. The town provides Flood Insurance Rate Map panels through the Development Services department. You can also check the FEMA Flood Map Service Center at msc.fema.gov.
Do I need flood insurance in Little Elm?
If your property is in a FEMA Special Flood Hazard Area and you have a federally-backed mortgage, flood insurance is required by your lender. Even outside mapped flood zones, flood insurance is recommended given the proximity to Lewisville Lake.
Can I build in the floodplain in Little Elm?
Building in the 100-year floodplain requires elevating the structure above the Base Flood Elevation. Building in the regulatory floodway is generally prohibited unless a professional engineer provides a no-rise certification.
Compare other topics
See how Lewisville and Little Elm compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool